Antifriction bearing



Feb. 28,1928. 1,660,570

J. F. ocoNNOR ANTIFRICTION BEARING Filed Jan. 21. 1924 I! /i I??? '47? z [i I: gl" E1 l i L V \\\\\\L feg/.z ,g Z l] Patented ree. 2e, ieee.

nairansraras .'roEN- E. ocoNNoR, or crrrcneo, ILLINOIS, AssIeNoR, RY MEsNE ASSIGNMENTS, ro w. n. MINER, INC., n coRroRATIoNoE DELAWARE.

`AN'IIFRIcTIoN BEARING.

This invention relates to improvements in antifriction bearings.

The object of this invention is to provide an Vantitriction bearing especially adapted 5 for use as a side bearing for railway cars and more specifically, the object ofthe invention is to provide new and improved Vmeans for insuring the return ot the antitriction element to normal position after each actuation of the bearing. i Inv the drawing forming a part, of this specification, Figure 1 is a vertical sectional view taken through portions ofthe bodyand truck bolsters of a railway car, showing -my 5 improvements applied thereto.

2 is a vertical, sectional view taken substantially on the line 2?-2 of Figure l. Y In said drawing, 10 denotes the under side of they bodyl bolster and 11 the upperside of theopposed truck bolster of afrailway car.

As shown, my improved side bearing is applied to the truck bolster and the same comprises broadly, a retaining member, housing or base casting A; an' anti-friction element B; and a pair of side weights or pendulums The base casting A is of box-like form, the same having curved end walls l12V and side walls 13, the latter being extended transversely inwardly on opposite sides of its vertical center line to form inwardly extending anges 1.1i, these ianges thence extending upwardly at 15 to the top of the casting. Vertically extending guideways or recesses 16 are formed centrally of the side kwalls of the casting, these recesses having parallel vertical walls and opening into the interior-oi:l Vthe casting, and being preferably under-cut or outwardly lared'at their lower ends, vas

' 40 indicated at 25. Legs 17 are formed on the bottom of said casting land extend transversely thereof for attachment to a wear plate or bearing plate 19 by means of rivets 18. The Wear plate is in turn mounted upon the truck bolster by rivets 20.

. The anti-friction element B is in the form of a cylindrical roller adapted to roll back and forth to either side ot its normal central position on the bearing plate 19 and to project upwardly beyond the top of the' base casting for bearing engagement with the under surface of the body bolster v10. n

The side weights or pendulum members C-C are arranged at the ends of the antifriction element, each of said pendulums Andv Figurev Figure 1;

having a heavy enlarged lower portion21, a u

narrow rod-likerelatively lightweight upward extension 22 lintegral therewithy and rigidly extending radially therefrom, and a substantially cylindrical pin portion23 at the upper end of said extension 22l tra-nsverselyithereof. v'.Ihependulums C-C are pivotally mounted at Vjche top of their-genlarged portions, on the projecting ends of a pin 2li extending 'axially' through thepantiyfriction roller, and the portions 2370i the pendulum members are adapted to pivotally and `slidablyfengage in thevert-ical recesses or slots l16 ot the base casting. major portionof the weightyoi" the counter. balan-ce members lies (below their pivotal axes, as shown in the figures ofthe drawing,

Thus, the

vso as to most eiiciently perform their counj ter-balancing function.' l 1 In assembling'the parts`the anti-,friction element, together with the pendulums piv- `oted thereto is inserted into the base casting from its bottom, and the wear plate 19 is then rivetedin place to the casting so as to prevent any loss ofparts either in transit or after they are in place on, the bolster. v

.The normal position of the parts is.. as shown in fulllines in .Figure 1. v"In opera-A tion, assuming that the body bolster moves to the left relatively to the'truck bolster, the antiftriction roller `will be shifted toward the Vposition shown in dotted lines Figure 1, carrying thependulum members therewith and causing themtobe oscillated about their respective vpivots. `24: in such manner that they will assume the position of un'- stable equilibrium shown in dotted lines in As soon as the vpressure is released, the pendulum members will tend to return to their normal position indicated in full lines, thus bringing the roller back to its normal centralposition. During the return action, it is evident that the members G-C fulcrum-about their upper ends 23--23v i so that the loadV from the members C-C is applied to the roller B at 24 with a'multiplied average effect.

By undercutting the lowerV ends of the guidingslots 16, it is possible for the enlarged .portions 21 of the pendulum members to assume a. higher elevation at the extreme position of the roller than it such portions were not under-cut,

Vand yet at the same time permit of the uppenduwardly' extending portions of the lums, beyondv the pivotal points, being as small or light in weight as possible. The

- flanges 14 act as stops to limit the lifting of the roller relative tothe casting. Axial shifting of the roller is limited by the pendulums engaging thehousing'pwalls, and the coacting guideways and pendulum extensions practically prevent a too free rolling of the anti-friction element when free from I have herein shown and described what VI now consider the preferred manner of carrying out my invention but the saineV is merely illustrative and -I contemplate all changes and modiiications ythat come within the scope of the claims appended hereto.

Y I claim: I

1. In ananti-friction bearing, the combination kwith `a housing having `a bearing sur- Y facetherein and alined vertical guideways at its sides; of an anti-friction'roller within said hou-sing, adapted to roll back and forth jon 'said bearing surface, said roller having a pin projecting axially from its ends; and

pendulum membersY arranged'betvveenthe ends of said rollerV andthe corresponding'V 'sides of said housing, each pendulum lmember comprisinga heavy enlarged lower portion pivoted atV its upper end to said pin and also having a relatively light, rod-like portion rigidly therewith, the latter beingl provided with a transversely extending rounded lug at its upper end, said lugs slidably andpvotally engaging inthe vertical guideways y of said housing, whereby said roller will 1- oscillate the enlarged portionsof said pendulums Vto cause the same to be displaced relatively with reference toy the central vertical aXisfof' said roller and in advance thereof to positions of unstable equilibrium when actuated, to return said roller to its normal position when the actuating pressure is released. y

2.' In an anti-friction bearing7 the combination with a retaining member adaptedto be mountedl on a truck bolster and having sion rigidly and integrally connected to said heavy lower portion'7 the upper end of said extension being provided with atransverseliy extending lug, said lug being limited to sli u ably and pivotally move in said vertical guidevvays of the housing when saidV roller moves to either side of normal central position to oscillate the pendulums about their pivotalaxes, the lower ends of 4said guideways being under-cut to permit full movement of said pendulums, the pendulumsreturning said roller to its normal position when the actuating pressure on thefroller is released.

3. In an anti-friction bearingthe combination with a support having an extended bearing surface; of a roller having movement on said support lengthwise of thelatter;

an arm pivotally mounted between its ends:

on the roller for swinging movement on an axis concentric with the axis ofthe roller', said arm being weighted at one end, said Weighted end being kfree to swing; means for guiding the end of the lever remote from the weighted portion in a path at an angle to the direction of movement of the roller to elfect movement of saidpweighted end of the lever away from the normal dead center position thereof at a constantly increasing accelerated speed with respect A'to the speed of movement of the roller. l

In Witness that I` claim the foregoingl have hereunto subscribed my name this 16th day of January 1924.

y JOHN F. OCONNOB.- 

